That's a good check... if the scope of the segment is incorrect, it could be looking at All Visits from all visitors that performed action X at any time during the report period... instead of limiting the data to Visits where Action X is performed.
Given this table, and what it is trying to show based on the naming convention, I would use a Hit based Segment to find "Successful Internal Searches" or "Unsuccessful Internal Searched"... when paired with Visits, this will properly give you the number of visits where those actions were performed.